package com.zye.Util;

import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.sql.Connection;
import java.util.Properties;

public class DataSourceUtils {
    private static DataSource dataSource;
    //静态代码块，类加载时读取配置文件，并且创建数据对象
    static {
        //创建properties对象
        Properties properties=new Properties();
        //加载配置文件
        try{
            properties.load(DataSourceUtils.class.getClassLoader().getResourceAsStream("druid.properties"));
            //创建数据源
            dataSource= DruidDataSourceFactory.createDataSource(properties);

        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        }
        //获取连接
    public static Connection getConnection(){
        if(dataSource!=null){
            try{
                return dataSource.getConnection();

            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        return null;
    }
    }

